The Listeo Core plugin for WordPress is vulnerable to unauthenticated arbitrary media upload in all versions up to, and including, 2.0.27 via the "listeo_core_handle_dropped_media" function. This is due to missing authorization and capability checks on the AJAX endpoint handling file uploads. This makes it possible for unauthenticated attackers to upload arbitrary media to the site's media library, without achieving direct code execution.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1